631263803 has 2 divisors, whose sum is σ = 631263804. Its totient is φ = 631263802.

The previous prime is 631263791. The next prime is 631263823. The reversal of 631263803 is 308362136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631263803 - 2⁸ = 631263547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631263803.

It is not a weakly prime, because it can be changed into another prime (631263823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315631901 + 315631902.

It is an arithmetic number, because the mean of its divisors is an integer number (315631902).

Almost surely, 2^631263803 is an apocalyptic number.

631263803 is a deficient number, since it is larger than the sum of its proper divisors (1).

631263803 is an equidigital number, since it uses as much as digits as its factorization.

631263803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 631263803 is about 25124.9637412674. The cubic root of 631263803 is about 857.8347382308.

The spelling of 631263803 in words is "six hundred thirty-one million, two hundred sixty-three thousand, eight hundred three".